化简9X-{6-〔-3x+(-1-4x)〕+2x}
问题描述:
化简9X-{6-〔-3x+(-1-4x)〕+2x}
一步步的计算哦
答
9X-{6-〔-3x+(-1-4x)〕+2x}
=9x-{6-[-3x-1-4x]+2x}
=9x-{6+3x+1+4x+2x}
=9x-{9x+7}
=9x-9x-7
=-7